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- W2914423169 abstract "We theoretically revealed that a weak photoexcitation achieves the electric polarization-inversion with approximately $18%$ of all the charges, which was interpreted as a superimposition of multi-exciton states, from the charge-ordered ferroelectric ground state of (TMTTF)$_{2}$PF$_{6}$ at absolute zero temperature. Regarding a relative change of electric polarization ($Delta P/P$), the photoexcitation corresponds to $36%$, which is much larger than $Delta P/P$ of other typical organic materials. The value of $Delta P/Psim 36%$ can be enlarged by a strong photoexcitation. This fact is useful not only for applications of this material and other analogous materials in optical devices but also for researches toward controlling electric polarizations by light, which is one of the recent attracting issues on photoinduced phase transition phenomena. The photoexcitation of $Delta P/Psim 36%$ corresponds to the single peak of the optical conductivity in the low-energy region, which was also observed at 10 K. Theoretical calculations are based on a quarter-filled one-dimensional effective model with appropriate parameters and 50 unit cells." @default.
- W2914423169 created "2019-02-21" @default.
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- W2914423169 date "2019-06-03" @default.
- W2914423169 modified "2023-10-08" @default.
- W2914423169 title "Photoexcitation of a one-dimensional polarization-inverted domain from the charge-ordered ferroelectric ground state of (TMTTF)2PF6" @default.
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- W2914423169 doi "https://doi.org/10.1103/physrevb.99.245104" @default.
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